BuyBatts 2GB RAM Memory Fits Apple MAC PRO (4-CORE Xeon 5400 Series) 2ND Gen. Early 2008, MAC PRO (8-CORE Xeon 5400 Series) 2ND Gen. Early 2008 Desktop (2GB DDR2-800 PC2-6400 240-pin UDIMM) Chipset: 2Rx8 16c 1.80V CL6 Item Type: DDR2-800 PC2-6400 (non-ECC) Form Factor: 240-pin UDIMM Capacity: 2GB